WNBA Atwell was selected by the
Los Angeles Sparks in the third round (27th overall) of the
2022 WNBA draft. She made the opening night roster and made her first career start against the
Chicago Sky on 6 May. After appearing in four games, Atwell was waived by the Sparks on 7 June 2022. In April 2024, Atwell received a training camp invite from the
Phoenix Mercury of the WNBA. She returned to the Mercury in September 2024 on a seven-day contract, debuting against the
Washington Mystics and scoring two points in four minutes in a 13-point loss. Her contract was extended by the Mercury for another seven days and then for the remainder of the season ahead of the WNBA playoffs. In February 2025, Atwell was signed by the Mercury to a training camp deal, but was quickly waived prior to it starting.
WNBL and NBL1 On 4 June 2022, Atwell signed with the
Perth Lynx for the
2022–23 WNBL season. She had a 27-point game in January 2023 and averaged 13 points, 4.8 rebounds and 1.3 assists for the season. Atwell joined the
Bendigo Braves of the
NBL1 South for the
2023 season. She led the Braves to the
NBL1 South championship behind her
grand final MVP performance of 36 points, eight rebounds and two assists in an 83–78 win over the
Waverley Falcons. Atwell and the Braves went on to win the
NBL1 National championship. She was named to the NBL1 National Finals All-Star Five. On 19 May 2023, Atwell re-signed with the Lynx for the
2023–24 WNBL season. On 27 December 2023, she had a career-high 36 points and seven 3-pointers in a 98–90 win over the
UC Capitals. In game one of the Lynx's grand final series against the
Southside Flyers, Atwell had a game-high 30 points and a career-high nine 3-pointers in a 101–79 win. They went on to lose the series 2–1. Atwell re-joined the Bendigo Braves for the
2024 NBL1 South season. In 12 games, she averaged 27.17 points, 5.08 rebounds, 1.92 assists and 1.83 steals per game. On 22 July 2024, Atwell re-signed with the Lynx for the
2024–25 WNBL season. She was named co-captain of the team alongside
Anneli Maley. Atwell missed the first seven games of the season with a knee injury, returning in early December. She underwent post-season surgery, which saw Atwell spend the winter recovering. On 9 July 2025, Atwell re-signed with the Lynx for the
2025–26 WNBL season, returning as co-captain for a second season. She helped the Lynx reach the WNBL grand final series, where they lost 2–0 to the
Townsville Fire. Atwell joined the
Rockingham Flames of the
NBL1 West for the
2026 season. ==National team career==